Hey, I like it. I may have to borrow a version of what you've designed to solve the ball starting problems my little daughters have. I say "little", but all three are full grown women, but none are much over a hundred pounds. They have the darndest time with the initial start of the patched ball, so I usually need to reach over and give their ball a whack with my fist on the ball starter. They could handle something like your starter by themselves, so I don't need to be standing next to them when we're hunting.
I think sliding it over the ramrod would not be as convenient in the feild as a separate ball starter, so I may approach it from that direction. A slide hammer starter that could hang from their belt, or loop on their clothes, used quickly, then re-hung on their belt, then go for the ramrod.
I hope you don't mind me borrowing your idea, but it is a good one. :thumbsup: Bill